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Finding the Fourth Proportional to 60,149.76, 90,233.28 and 18,600

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Solution

The fourth proportional to 60,149.76, 90,233.28 and 18,600 is: 27,902.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,149.76 : 90,233.28 = 18,600 : x
  2. Step 2: Convert to fraction form
    60,149.76/90,233.28 = 18,600/x
  3. Step 3: Cross multiply
    60,149.76x = 90,233.28 × 18,600
  4. Step 4: Simplify right side
    60,149.76x = 1,678,339,008
  5. Step 5: Solve for x
    x = 1,678,339,008/60,149.76
  6. Step 6: Final answer
    x = 27,902.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.